mirror of
https://github.com/ae-utbm/sith.git
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167 lines
6.5 KiB
Python
167 lines
6.5 KiB
Python
from datetime import date, timedelta
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from django.db import models
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from django.utils import timezone
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from django.utils.translation import ugettext_lazy as _
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from django.conf import settings
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from django.core.exceptions import ValidationError
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from django.core.urlresolvers import reverse
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from core.models import User
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def validate_type(value):
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if value not in settings.SITH_SUBSCRIPTIONS.keys():
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raise ValidationError(_('Bad subscription type'))
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def validate_payment(value):
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if value not in settings.SITH_SUBSCRIPTION_PAYMENT_METHOD:
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raise ValidationError(_('Bad payment method'))
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class Subscriber(User):
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class Meta:
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proxy = True
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def is_subscribed(self):
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s = self.subscriptions.last()
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return s.is_valid_now() if s is not None else False
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class Subscription(models.Model):
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member = models.ForeignKey(Subscriber, related_name='subscriptions')
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subscription_type = models.CharField(_('subscription type'),
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max_length=255,
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choices=((k, v['name']) for k,v in sorted(settings.SITH_SUBSCRIPTIONS.items())))
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subscription_start = models.DateField(_('subscription start'))
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subscription_end = models.DateField(_('subscription end'))
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payment_method = models.CharField(_('payment method'), max_length=255, choices=settings.SITH_SUBSCRIPTION_PAYMENT_METHOD)
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location = models.CharField(choices=settings.SITH_SUBSCRIPTION_LOCATIONS,
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max_length=20, verbose_name=_('location'))
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# TODO add location!
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class Meta:
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ordering = ['subscription_start',]
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def clean(self):
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try:
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for s in Subscription.objects.filter(member=self.member).exclude(pk=self.pk).all():
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if s.is_valid_now():
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raise ValidationError(_("You can not subscribe many time for the same period"))
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except: # This should not happen, because the form should have handled the data before, but sadly, it still
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# calls the model validation :'(
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# TODO see SubscriptionForm's clean method
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raise ValidationError(_("You are trying to create a subscription without member"))
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def save(self):
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super(Subscription, self).save()
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from counter.models import Customer
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if not Customer.objects.filter(user=self.member).exists():
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last_id = Customer.objects.count() + 5195 # Number to keep a continuity with the old site
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Customer(user=self.member, account_id=Customer.generate_account_id(last_id+1), amount=0).save()
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self.member.make_home()
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def get_absolute_url(self):
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return reverse('core:user_profile', kwargs={'user_id': self.member.pk})
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def __str__(self):
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if hasattr(self, "member") and self.member is not None:
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return self.member.username+' - '+str(self.pk)
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else:
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return 'No user - '+str(self.pk)
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@staticmethod
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def compute_start(d=date.today(), duration=1):
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"""
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This function computes the start date of the subscription with respect to the given date (default is today),
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and the start date given in settings.SITH_START_DATE.
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It takes the nearest past start date.
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Exemples: with SITH_START_DATE = (8, 15)
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Today -> Start date
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2015-03-17 -> 2015-02-15
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2015-01-11 -> 2014-08-15
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"""
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if duration <= 2: # Sliding subscriptions for 1 or 2 semesters
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return d
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today = d
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year = today.year
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start = date(year, settings.SITH_START_DATE[0], settings.SITH_START_DATE[1])
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start2 = start.replace(month=(start.month+6)%12)
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if start > start2:
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start, start2 = start2, start
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if today < start:
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return start2.replace(year=year-1)
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elif today < start2:
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return start
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else:
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return start2
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@staticmethod
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def compute_end(duration, start=None):
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"""
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This function compute the end date of the subscription given a start date and a duration in number of semestre
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Exemple:
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Start - Duration -> End date
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2015-09-18 - 1 -> 2016-03-18
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2015-09-18 - 2 -> 2016-09-18
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2015-09-18 - 3 -> 2017-03-18
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2015-09-18 - 4 -> 2017-09-18
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"""
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if start is None:
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start = Subscription.compute_start(duration=duration)
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# This can certainly be simplified, but it works like this
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try:
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return start.replace(month=(start.month-1+6*duration)%12+1,
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year=start.year+int(duration/2)+(1 if start.month > 6 and duration%2 == 1 else 0))
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except ValueError as e:
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return start.replace(day=1, month=(start.month+6*duration)%12+1,
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year=start.year+int(duration/2)+(1 if start.month > 6 and duration%2 == 1 else 0))
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def can_be_edited_by(self, user):
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return user.is_in_group(settings.SITH_MAIN_BOARD_GROUP) or user.is_root
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def is_valid_now(self):
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return self.subscription_start <= date.today() and date.today() <= self.subscription_end
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def guy_test(date, duration=4):
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print(str(date)+" - "+str(duration)+" -> "+str(Subscription.compute_start(date, duration)))
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def bibou_test(duration, date=date.today()):
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print(str(date)+" - "+str(duration)+" -> "+str(Subscription.compute_end(duration, Subscription.compute_start(date, duration))))
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def guy():
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guy_test(date(2015, 7, 11))
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guy_test(date(2015, 8, 11))
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guy_test(date(2015, 2, 17))
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guy_test(date(2015, 3, 17))
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guy_test(date(2015, 1, 11))
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guy_test(date(2015, 2, 11))
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guy_test(date(2015, 8, 17))
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guy_test(date(2015, 9, 17))
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print('='*80)
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guy_test(date(2015, 7, 11), 1)
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guy_test(date(2015, 8, 11), 2)
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guy_test(date(2015, 2, 17), 3)
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guy_test(date(2015, 3, 17), 4)
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guy_test(date(2015, 1, 11), 1)
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guy_test(date(2015, 2, 11), 2)
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guy_test(date(2015, 8, 17), 3)
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guy_test(date(2015, 9, 17), 4)
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print('='*80)
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bibou_test(1, date(2015, 2, 18))
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bibou_test(2, date(2015, 2, 18))
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bibou_test(3, date(2015, 2, 18))
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bibou_test(4, date(2015, 2, 18))
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bibou_test(1, date(2015, 9, 18))
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bibou_test(2, date(2015, 9, 18))
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bibou_test(3, date(2015, 9, 18))
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bibou_test(4, date(2015, 9, 18))
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print('='*80)
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bibou_test(1, date(2000, 2, 29))
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bibou_test(2, date(2000, 2, 29))
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bibou_test(1, date(2000, 5, 31))
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bibou_test(1, date(2000, 7, 31))
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bibou_test(1)
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bibou_test(2)
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bibou_test(3)
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bibou_test(4)
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if __name__ == "__main__":
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guy()
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